Y: If the fan is blocked by foreign materials, power off precision air conditioners, remove all foreign materials, and check whether the fault persists.
If the fault is rectified, troubleshooting is complete.
If the fault persists, go to Step 2.
N: If the fan is not blocked by foreign materials but cannot start, go to Step 2.

Step 2 Check whether power is properly supplied to the fan or the fan is faulty. For details, see the air conditioner user guide.

Y: If the power is not properly supplied to the fan or the fan is faulty, troubleshoot or replace the fan and check whether the fault persists.
If the fault is rectified, troubleshooting is complete.
If the fault persists, contact Huawei technical support.
N: If the power is properly supplied to the fan and the fan is normal, contact Huawei technical support.